Water-tube boiler



(No Model.) 5 Sheets-Sheet 1.

H. S. PELL. WATER TUBE BOILER.

No. 597,151. Patented Jan. 11,1898.

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(No Model.) 5 Sheets-Sheet 2.

H. S. P'ELL. WATER TUBE BOILER.

Patented Jan. 11, 1898.

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WATER TUBE BOILER. No. 597,151. Patented Jan. 11,1898.

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H. S. PELL.

WATER TUBE BOILER.

Patented Jan. 11., 189 8.

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H. S. PELL. WATER TUBE BOILER.

No. 597,151. Patented Jan. 11,1898.

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UNITED STATES PATENT tries,

HARRY S. FELL, OF AKRON, OHIO, ASSIGNOR TO THE STIRLING COMPANY,

' OF CHICAGO, ILLINOIS.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 597,151, dated January 11, 1898. Application filed January 8, 1397. Serial No. 618,442. (No model.)

To ctlZ whom it may concern:

Be it known that I, HARRY S. PELL, a citizen of the United States, residing at Akron, Summit county, Ohio, have invented a new and useful Improvement in VVater-Tube Boilers, of which the following is a specification.

The object of my invention is to improve the Stirling type of boiler; and the invention consists in the features and combinations hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a sectional elevation taken on line 1 of Fig. 5 Fig. 2, a central vertical sectional elevation taken on line 2 of Fig. 3; Fig. 8, a vertical sectional elevation taken on line 3 of Fig. 5;

Fig. a, a vertical sectional elevation taken on line 4: of Fig. 2, and Fig. 5 a plan sectional elevation taken on line 5 of Fig. 2.

In constructing my improved boiler I prefer to use a principal lower mud-drum A, elevated steam and water drums B, B, and B water'pipesb, steam-pipes Z), banks of tubes O, connecting the lower mud-drum with the elevated steam and water drums, and firebrick partitions and shelves 0, all in the way generally used in a Stirling boiler; but in addition thereto I also employ various other parts or features, separately or together, as follows:

In order to hold the elevated steam and water drums in fixed relative position and to stiden or strengthen the'general construction, I prefer to use braces or gusset-plates b between the several drums, and in some cases between the rear and front drums, or either of them, and the framework of the boiler. These braces are especially applicable when the boiler is to be used for marine purposes, in which use it is necessarily subjected to constant vibrations and jerking or surging motions.

At each side of the boiler I prefer to placea lower mud-drumD,which I call side muddrums. These drums are preferably provided with flanges d, which serve to connect them with the principal mud-drum but instead of this flanged connection the mud-drum may be connected by tubes or nipples in such way as to form communication between the principal mud-drum and either or both side muddrums. In some cases, however, it may be advisable to use only one side mud-drum and to have the mud-drums entirely disconnected.

At each side in the upper part of the boiler, but on a plane lower than the elevated steam and water drums, I prefer to place an additional water-drum E, communicating with the elevated steam and water drums and also with the lower side mud-drums. The communication between these elevated water-drums E and the steam and water drums is preferably through enlarged pipes F, which enable the water to pass freely from one drum to another, and the communication between the elevated water-drums and side mud-drums is through enlarged pipes F, which also permit of free circulation.

At the front of the boiler an enlarged pipe F extends horizontally from one pipe F to the other and an enlarged pipe F from one side mud-drumto the other, these two horizontal pipes forming communication between the enlarged vertical pipes and mud-drums at the sides of the boiler. Tubes G also connect the water-drums E with all the lower muddrums. I prefer to arrange these tubes in rows and to have fire-brick linings Gr between the .rows, so that the tubes and lining will practically form the side walls of the boiler.

At the front of the boiler are rows of tubes J, extending down from the front steam and water drum to the horizontal pipe F Suitable fire-brick linings J are placed between these tubes, so that the tubes and fire-brick lining practically form the front wallof the boiler. Tube connections J 2 are also formed between the horizontal pipes F and F". I also prefer to place two drums II over the fireplace. As shown, these drums are connected with the front elevated steam and water drums by enlarged pipes H with each other by rows or banks of tubes I and with the side in uddrums by rows or banks of tubes I. Suitable fire-brick partitions I are placed in or among the rows or banks of tubes, so that the drums H, tubes I and I, and fire-brick partitions I form the arch of the furnace. In some cases,

however, a single drum may be used above the fireplace, connected with the side muddrums, as above described, and in still other cases the tubes and fire-brick partitions may be dispensed with and a single drum of suit- IOO able size and shape extending from one side mud-drum to the other made to form the entire arch.

In order to hold the fire-brick partitions and shelves in position and in close contact with their respective tubes, I prefer to use angle-irons c in such position that when one part is against the fire-brick partitions the other will be in contact with some of the tubes. In this way the angle-irons serve to support the fire-brick partitions and shelves, retain them in place, and prevent warping or displacement. If desired, however, T- irons, channel-irons, or other suitable braces may be used for this purpose. This way of bracing or holding the fire-brick partitions is especially applicable when the boiler is to be used for marine purposes.

The boiler thus constructed may be inclosed in a metallic wall or jacket K, and an asbestos lining L, secured in any convenient way, may be used between this wall and the adjacent tubes. This construction is also especially applicable when the boiler is intended to be used for marine purposes, although it may be used when the boiler is intended for other purposes.

The advantages of my invention are that it provides for a simple, economical, and efiicient boiler compact in form, having the largest amount of heating and steam-generating surface, and capable of use for either land or marine purposes.

Although I have described my invention somewhat minutely, it will of course be understood that I do not intend to limit myself to exact forms, minor features, or details of construction or to the use of all my improvements in a single boiler further than specified or pointed out in the claims. On the contrary, I contemplate making mechanical changes in form, omitting parts not specified in the claims, or using equivalents, as circumstances may suggest or render expedient.

I claim- 1. In a water-tube boiler, the combination of elevated steam and water drums, a lower mud-drum, banks of tubes connecting the elevated steam and water drums with the lower mud-drum, an elevated water drum or drums E on a plane lower than the elevated steam and water drums and extending at right angles thereto, and water communication between the elevated water drum or drums and the upper and lower parts of the boiler, substantially as described. I

2. In a water-tube boiler, the combination of elevated steam and water drums, a lower mud-drum, banks of tubes connecting the elevated steam and water drums with the lower mud-drum, an elevated water-drum E at each side of the boiler on a plane lower than the elevated steam and water drums and extending at right angles thereto, and water communication between each of the elevated water-drums and the upper and lower parts of the boiler, substantially as described.

3. In a water-tube boiler, the combination of elevated steam and water drums, a principal lower mud-drum, banks of tubes connecting the elevated steam and water drums with the principal lower mud-drum, an elevated water drum or drums on a plane lower than the elevated steam and water drums, a lower mud drum or drums at the side or sides of the boiler connected with the lower mud-drum, and water communication between the front elevated water-drum and the front side muddrum, substantially as described.

4. In a water-tube boiler, the combination of elevated steam and water drums, a principal lower mud-drum, banks of tubes connect ing the elevated steam and water drums E with the principal lower mud-drum, an elevated water-drum at each side of the boiler on a plane lower than the elevated steam and water drums and extending at right angles thereto, a lower mud-drum at each side of the boiler extending at right angles to the principal lower mud-drum, and water communication between the elevated water-drums and the side mud-drums, substantially as described.

5. In a water-tube boiler, the combination of elevated steam and water drums, a principal lower mud-drum, banks of tubes connecting the elevated steam and water drums with the principal lower mud-drum, an elevated water-drum at each side of the boiler on a plane lower than the elevated steam and water drums and extending at right angles thereto, alower mud-drum at each side of the boiler and extending at right angles to the principal lower mud-drum, an enlarged pipe extending from each elevated water-drum to its corresponding side mud-drum, an enlarged pipe at the front of the boiler forming communication between the enlarged pipes at the sides of the boiler, and an enlarged pipe at the front of the boiler forming communication between the side mud-drums, substantially as described.

6. In a water-tube boiler, the combination of elevated steam and water drums, a lower mud-d rum, banks of tubes connecting the ele vated steam and water drums with the lower mud-drum, an enlarged pipe extending crosswise of the boiler at its front, and a row or rows of tubes forming communication between the front elevated steam and water drum and the enlarged pipe, substantially as described.

7. In a water-tube boiler, the combination of a lower mud-drum at each side of the boiler, a drum above the fireplace extending from one side mud-drum to the other forming an arch over the fireplace, and water communication between the arch and the upper part of the boiler, substantially as described.

8. In a water-tube boiler, the combination of a lower mud-drum at each side of the boiler, a drum or drums above the fireplace, water communication between the drum or drums above the fireplace and the upper part of the boiler, rows of tubes connecting the side muddrums with the drum or drums above the fireplace, and fire-brick partitions between the tubes, whereby an arch is formed over the fireplace, substantially as described.

9. In. a water-tube boiler, the combination of a lower mud-drum at each side of the boiler, two drums above the fireplace, Water communication between the drum or drums above the fireplace and the upper part of the boiler, rows of tubes between the two drums above the fireplace, rows of tubes connecting the side mud-drums with the drums above the fireplace, and fire-brick partitions between the several rows of tubes, whereby an arch jacent to the banks of tubes, and transverse braces holding the fire-brick partitions in place, substantially as described.

HARRY S. FELL.

Witnesses:

D. W. PELL, A. R. HENRY. 

